LinuxCBT EL-7x Edition

English | 2015 | mp4 | H264 1356x764 | AAC 2 ch | 25 hrs 13 min | 3.53 GB

eLearning

Course Objective

Features | Installations

- Discuss features of RedHat® | CentOS Enterprise Linux 7

- Explore installation options

- Perform GUI installation

- Perform Text-Mode Installation

- Provision Network Installation repository

- Perform Network Installation

- Perform Kickstart Installation

- Peruse Rescue Mode

Basic $SHELL Tools

- 'pwd', 'touch', 'stat', 'ls', 'id'

- 'echo', 'cat', 'head', 'tail', 'more', 'less'

- 'cp', 'mv' - transport content as needed

- 'tty' - Discuss terminals

- 'tar' - explore features and advantages of tarballs

- 'gzip', 'bzip2', 'zip' - Compress content

- Use checksums to validate data pre|post-transmissions

- 'file' - discuss logic used to ascertain file type

- 'dd' - generate content as desired

- Use 'w' commands

- 'ps' - explore process lists

- free & top - explore process management with top

- Process lines with: 'grep'

- Process fields with: 'awk'

- Explore 'sed' - streams processing

- User and group management concepts

SystemD | System Control

- Discuss new framework

- Contrast with INITD

- Identify FS footprint

- Alter system run-states via system control

- Manage services as needed

- Peruse INITD support

Storage Administration | File System (FS) Semantics | Features | Usage

- Discuss latest default FS implementation

- Identify common FS object types

- Discuss the benefits of Symbolic Links

- Implement a variety of Soft Links and evaluate characteristics

- Contrast Soft && Hard Links

- Implement Hard Links and evaluate characteristics

- Manipulate both Link forms and evaluate

- Identify current virtual memory environment

- Implement file-based additional virtual memory

- Allocate partitions to virtual memory usage

- Enable | Disable virtual memory as required

- Explore default XFS implementation

- Provision XFS storage blocks as needed

- Expand XFS blocks as required

- Explore default Logical Volume Management (LVM) Environment

- Provision LVM storage components

- Aggregate components into accessible blocks as desired

- Manipulate LVM storage on-demand

CRON - System Scheduler

- Peruse Cron Implementation

- Examine schedule options

- System-wide && User-wide Cron Jobs

- Run jobs as needed

- Check Cron status periodically

Syslog | Log Rotation Facilities

- Explore LOG rules engine

- Examine OS-provisioned LOG entries

- Archive LOGs to remote system

- Peruse Logrotate environment

- Rotate LOGs as needed

- Examine results

Common | Invaluable Network Tools

- 'ping' - availability

- 'mtr' - interhost paths and metrics

- 'telnet' - TCP socket availability

- 'netstat' - examine sockets

- 'arp' - L2 broadcast domain (VLAN) neighbors

- 'dig', 'nslookup', 'host' - name resolution tools

- 'wget', 'curl' - content retrieval agents

Time Administration | ChronyD

- Examine default environment

- Contrast with prior versions

- Explore 'chronyd' time service

- Contrast 'chronyd' with 'ntpd'

- Configure 'chronyd' to permit internal synching

- Ensure synchronized time across nodes

YUM | Package Management

- Discuss features

- Contrast with 'rpm'

- Compare with similar tools

- Explore default environment with 'yum'

- Install | Remove packages as needed

- Apply updates where applicable

- Provision internal PROD YUM Repository

- Ensure functionality

- Manage packages

IP Administration

- Discuss features

- Contrast with 'ifconfig' | alias method

- Discuss 'NetworkManager' && 'ifcfg-*' scripts

- Peruse appropriate config tree

- Examine important directives

- Add IP resources dynamically

- Committ desired resources to persist

- Test persistance of IP resources

DHCPD | BIND DNS | Services

- Provision dedicated virtual DHCP subnet

- Setup DHCPD with basic configuration

- Ensure address assignation

- Trace administered resources

- Provision DNS Caching-Only service

- Test relayed resolution of proxied requests

- Setup Primary DNS service && Test

- Replicate Primary DNS records to Secondary instance

- Test replication and resolution across nodes

FTP Server

- Identify && provision secure FTP server service

- Explore default configuration

- Alter configuration to suit hypothetical security policy

- CHROOT user principles to heighten security

- Test configuration

- Move data

HTTPD Server

- Discuss features

- Implement HTTPD server

- Explore default configuration

- Identify important directories, files and directives

- Configure IP-based Virtual Hosts && Test configuration

- Update configuration to support Name-based Virtual Hosts

- Contrast configurations

- Use 'apachectl' to validate && effect configuration changes

MariaDB | RDBMS

- Explain implementation - features | benefits

- Implement on targets

- Secure instances and test access

- Explore defaults

- Provision simple DB container with table and sample data

- Test access

- Purge sample DB container

NMAP | Reconnaissance

- Discuss features

- Install NMap

- Explore footprint

- Analyze locally-published resources

- Contrast with routable resources

- Explore broadcast domain

- Perform a variety of scans to obtain more intel

- LOG results for post-processing

Packet Capturing

- Discuss sample use-cases

- Capture default traffic set

- LOG captured traffic for post-processing

- Tune captures with BPF filters

- Post-process with TCPDump && WireShark

FirewallD

- Discuss implementation

- Relate to IPTables

- Install GUI management tool

- Explore default policies

- Contrast Run-Time && Permanent Policies

- Enter 'Panic' mode in hypothetical situation

- Resume normal communications

- Define PROD service group for rules-aggregation

- Apply PROD service group and test communications

MISC

- Intro to SELinux Implementation

- Examine default SSH behavior

- Restrict SSH access to SFTP only connections

- Enforce file nomenclature via SSH

- Test functionality